Advantages and disadvantages of Vortex Flowmeter
Instrument selection is very important instrumentation work, selection of correct or not directly affect whether the instrument to normal operation. Therefore, the choice of the flow meter, the first change we understand clearly the characteristics and usage characteristics of a meter, so as to "right" to obtain maximum benefits. Cheng Feng meter today to talk to you about the advantages and disadvantages of the next vortex flowmeter.
First, about the vortex flowmeter advantages:
(1) vortex flowmeter has no moving parts, the measurement component layout simple, functional and reliable, the use of long life.
(2) Vortex flowmeters measure a wide scale. Range than usual to reach 1:10.
(3) The volumetric flow vortex flowmeter is not measured fluid temperature, pressure, density or viscosity of thermal parameters of influence. Normally not alone calibration. It can measure the flow of liquids, gases or vapors.
(4) which forms the pressure loss is small.
(5) accuracy, repeatability of 0.5%, and less maintenance.
Second, about the shortcomings of the vortex flowmeter:
(1) the volume flow vortex flowmeters under the job status from the measured fluid temperature, pressure, density, thermal parameters, but after all the liquid or vapor mass flow measurement outcomes should be, for gas, after all, should measure outcomes It is to regulate the volume of traffic. Mass flow or volume flow has the necessary specifications through the fluid density conversion, it is necessary to ponder the fluid density changes caused by changes in fluid conditions.
(2) forming a flow measurement error are: pipeline flow rate measurement error uneven form; you can not accurately determine the density of the fluid medium when conditions change; wet assume full steam into dry steam full measure. If these errors are not to be bound or eliminated, the total vortex flowmeter measurement error will be great.
(3) The vibration function is poor. External shocks will make the vortex flowmeter to measure the onset of errors, you can not even work properly. Channel high velocity fluid vortex impact will attack the body attack additional cantilever oscillation, so that the measurement accuracy. Large diameter impact more significant.
(4) to measure the difference between dirty media adaptation. Attack the body easily vortex flowmeter is wound medium dirty or dirt, changes the geometry scale, forming a great impact on the measurement accuracy.
(5) Temperature function is poor. Vortex usually only measure fluid flow below 300 ℃ medium.
